The Insulator,washer, cataloged under National Stock Number 5970-01-020-2025, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Unison Industries Llc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-020-2025 |
| Primary Part Number | 109402 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Inside Diameter | 0.328 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN |
| Material | OVERALL MUSCOVITE MICA,PUNCHABLE GRADE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 109402 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 109402 | 5/9 Secondary reference U.S. Government activity |
NSN 5970-01-020-2025 is a Insulator,washer, manufactured by Unison Industries Llc, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-020-2025 has 1 manufacturer part number on file: 109402 (Unison Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-071-4859. Verify interchangeability with system specifications before substitution.
Key specifications for 109402: Overall Height: 0.005 INCHES MINIMUM AND 0.007 INCHES MAXIMUM IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN; Inside Diameter: 0.328 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN. 4 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.